The Taisho Emperor actually ascended to the throne upon the death of his father in 1912. The enthronement ceremonies, though, were held in 1915.

This medal commemorates that event, and it was freely issued to people throughout the country who participated in the celebration ceremonies. However, it doesn't seem to be as common as the later Showa Emperor Enthronement Commemorative of 1928.The gold mum crest is an attached piece.

Extremely rare 1915 Taisho Emperor Enthronement miniature medal.Almost never seen. Note that this is a miniature medal--it's very small.You can see its relative size next to a full-sized medal.

Nicely enameled badge with original case. Inscribed 'Emperor Enthronement Celebration, [??] Commemorative, Taisho 4 [1915] December, Tokyo.'The obverse reads Banzai. The Tokyo City emblem is on the inside case lid and on the obverse of the badge.